In October 1999,the population of the world reached
A) 1 billion.
B) 3 billion.
C) 6 billion.
D) 10 billion.

Question

Quizplus · Accepted Answer

The United Nations declared October 12, 1999 as "Six Billion Day" to mark the estimated population of the world reaching 6 billion. This makes option C the correct choice. Option A is too low, as the world passed 1 billion in the early 1800s. Option B is also too low, as the world passed 3 billion in the early 1960s. Option D is too high, as the world has not yet reached 10 billion (as of 2021, the estimated population is around 7.8 billion).

In October 1999,the Population of the World Reached